Flow Rates Model 
The Flow Rates activity is highly recommended both for math teachers and for science teachers in all fields. It can be used effectively for a variety of content applications and at various points in a course sequence. By allowing students to practice making and testing hypotheses about liquid flowing through a simple burette, it provides an excellent introduction to the scientific method. The collection and analysis of realtime data provides students with the opportunity to use their graphing and algebra skills in a real problemsolving situation. Finally, it facilitates a direct mental mapping between students' demonstration observations and mathematical modeling. 
Teacher Materials Student Activity Student Assessment Learning Goals/Standards STELLA Versions



